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HVAC ENGINEER

Good morning to you guys,,,,Am maintaining stulz Ac units precision down flow 10tones in a data center in uganda, does any one out there doing the same work (maintenance of stulz units made in Germany ) so that we can share some ideas about unit performance and problems of how to solve issues concerning stulz Ac units?

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thanx

I have a site with one Stulz unit in the ceiling of a computer room. It's an interesting design, with the complete unit indoors, and a vent duct for the condenser leading to an exhaust fan on the roof.

I haven't had any problems with it yet, just the normal PM visits, and it's been over three years now.

I face a problem with vcm cards since my units use electronic expansion valve
so due power fluctuations this valve control module keeps on failing and always replace it with newer version to improve on its working capabilities remember mine is precision down flow version 10tones